Oracle参数与Dapper问题

Question

I am struggling with using ORACLE parameters via DAPPER. The error message received is "ORA-00942: table or view does not exist".

However the code works without the parameter, and I suspect that this is a simple Oracle parameter syntax issue. The code follows:

    public List<ForecastData>GetByFiscalYear(string fiscalYear)
    {
        List<ForecastData> queryResults = new List<ForecastData>();

        String sqlQuery = @"SELECT RES.FISCALYEAR year FROM RESOURCE_AVAILABILITY RES WHERE RES.FISCALYEAR = :p_fiscalYear";

        using (var oraCon = new OracleConnection(System.Configuration.ConfigurationManager.ConnectionStrings["Oracle_HRZD"].ToString()))
        {
            oraCon.Open();
            queryResults = oraCon.Query<ForecastData>(sqlQuery, new { p_fiscalYear = fiscalYear }).ToList();
        }

        return new List<ForecastData>(queryResults);
    }

Any assistance will be greatly appreciated...

Answer 1

Usually, ORA-00942 is exactly what it says, it can't find the table/view (RESOURCE_AVAILABILITY) you are selecting from. So it's not in the schema for the user you log on as or the user has not been granted SELECT on the table/view if it's another schema.

But you say that if you remove WHERE RES.FISCAL_YEAR :p_fiscalyear , then it works. So it seems like you have select permissions on the table. Do you mean remove the whole where selection or have you tested enter a fixed string, as in WHERE RES.FISCAL_YEAR='2016' ?

My other top tip is to run Wireshark and look at what really is sent to the database, usually you connect on port 1521 filter on that.

Answer 2

The answer was to use the fully-qualified database-object name, including the schema. Thanks for your assistance.